National Geographic joins veteran wildlife cameraman Andrew Manske and hard-nosed outdoorsman Brian Bildson as they venture into some of North America’s most remote and inhospitable regions in an attempt to capture unprecedented and extraordinarily rare footage of wolves, bison, and wolverines. Leading their team to the vast grasslands of Canada’s Northwest Territories and to a secluded “Wolf Island” off the coast of British Columbia, they encounter floods, forest fires, hurricanes, and extreme temperatures, and they battle hunger and fatigue along the way.

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A single swarm of killer bees can deploy an attack force of 80,000 stingers, chase predators for a quarter of a mile, and bring down a creature as large as a horse. Killer bees have pushed farther north than many scientists thought possible and are now colonizing in the southern United States. Can scientists, beekeepers, and exterminators stop the invading hordes?

Andy Casagrande is not your average wildlife camera guy. Whether he's swimming with great white sharks, on foot with lions, or leaping out of a helicopter to film polar bears, nothing scares him…much. In each hour Andy carries out a dangerous assignment: go behind the kill with some of the world's most advanced camera technologies and break down the elements of the hunt. To get the images he needs, he has to get close to the planet's top predators-and, with luck, come home with a Killer Shot.

Meet the scientists of SETI, the Search for Extraterrestrial Intelligence, who monitor the radiowaves of deep space and learn why they agree that life as we know it can exist in many places in the universe.

The globe learned on December 26, 2004, that tsunamis can bring death and devastation to the world's coastlines. The product of undersea earthquakes and volcanic eruptions, tsunamis can race across oceans at more than 500 miles an hour, leaving a huge wake of destruction when they hit shore. Because it is difficult for scientists to predict how large these massive waves can be, tsunamis are one of the least understood of nature's forces, and one of the most dangerous. With insight from some of the scientific community's foremost researchers, and vivid accounts from past tsunami survivors, Tsunami: Killer Wave depicts nature at its most extreme, profiles the efforts being made to curb its effects, and illustrates the financial, physical and emotional toll it can leave on its victims.

Imagine a flu that kills 70 percent of those it infects and has the potential to become as contagious as the common cold. Would a wide spread panic break out? Would martial law have to be imposed? Would the global economy come to a halt? These are only a few of the concerns surrounding a deadly strain of avian influenza that first made news in Asia in 1997. Join National Geographic as we follow a swat team of virus hunters and the world's leading scientists in a race to understand the latest threat and prevent it from spreading.

The Mississippi River is one of the most important waterways on earth. For nearly a century man has tried to tame it. Measuring 2,300 miles from start to end, the great river requires skill and endurance to navigate in its entirety, an accomplishment few have done.

Almost every major culture includes an ancient flood story. What if evidence of the Great Flood could be found? Join Dr. Robert Ballard, discoverer of the Titanic, on an odyssey to find the submerged truth about the Great Flood. Dr. Ballard sets off to look for ancient shipwrecks, and search for evidence supporting a controversial theory that links the legend of the Great Flood with the catastrophic flooding of the Black Sea around 5500 B.C. As his sonar scans the desolate sea floor, and robotic submersibles search the haunting darkness of the Black Sea's "dead zone," the truth begins to emerge from the murky depths of myth and legend.

Throughout every ocean on earth, killer whales are the masters of the sea. Like wolves on land, these fearsome predators often hunt in packs, working together to snare their next meal. You'll journey around the globe to see their extraordinary hunting techniques in action. Plunge beneath the waves to watch the whales round up schools of herring, which they stun with flicks of their powerful tails. Discover the whales "playing with their food" by tossing their prey around in a frenzied game that hones their hunting skills. And witness the amazing spectacle of these huge whales hurling themselves onto the beach to snatch their unsuspecting prey. You will gain a new appreciation of these magnificent creatures as you come face-to-face with Killer Whales.

Over the last three decades, science has been advancing our understanding of stresshow it impacts our bodies and how our social standing can make us more or less susceptible. From baboon troops on the plains of Africa, to neuroscience labs at Stanford University, scientists are revealing just how lethal stress can be. Research tells us that the impact of stress can be found deep within us, shrinking our brains, adding fat to our bellies, even unraveling our chromosomes. Understanding how stress works can help us figure out ways to combat it and how to live a life free of the tyranny of this contemporary plague. In Stress: Portrait of a Killer, scientific discoveries in the field and in the lab prove that stress is not just a state of mind, but something measurable and dangerous.

In 1622, the Spanish galleon Nuestra Senora de Atocha sank off the coast of Florida. In her hold, she carried 40 tons of gold and silver and some 70 pounds of emerald contraband. For more than 300 years, men have died trying to find her and her priceless cargo. Join modern-day treasure hunter Mel Fisher who, after a 16-year search, found the riches that so many have sought.

Was Abraham Lincoln dying of cancer when he was killed? National Geographic is on the front lines as scientists attempt to solve a genetic mysteryusing a piece of fabric stained with the president's blood to run DNA analysis.